Hi Bill Fenner,
Thank you. I enabled Unix transport and added 'agentXSocket
/var/agentx/master' in /etc/snmp/snmpd.conf, and I was able to execute
snmpd. There was no /var/agentx/master created after starting snmpd, and
AgentX was unable to connect to snmpd.
I am following the AgentX tutorial at
http://www.net-snmp.org/tutorial/tutorial-5/toolkit/demon/. Kindly guide.
*example_daemon log*
tdomain: Found domain "unix" from specifier "unix"
trace: netsnmp_lookup_default_target(): snmp_service.c, 413:
defaults: netsnmp_lookup_default_target("agentx", "unix") ->
"/var/agentx/master"
trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 794:
tdomain: trying domain "unix" address "[NIL]" default address
"/var/agentx/master"
trace: netsnmp_unix_transport(): transports/snmpUnixDomain.c, 322:
netsnmp_unix: open remote Local IPC: /var/agentx/master
trace: netsnmp_unix_transport(): transports/snmpUnixDomain.c, 432:
netsnmp_unix_transport: *couldn't connect to "/var/agentx/master"*, errno 2
(No such file or directory)
*Snmpd.log*
trace: read_config(): read_config.c, 843:
9:read_config:line: /etc/snmp/snmpd.conf:214 examining: agentXSocket
/var/agentx/master
trace: read_config(): read_config.c, 971:
read_config:line: /etc/snmp/snmpd.conf:214 examining: agentXSocket
/var/agentx/master
trace: run_config_handler(): read_config.c, 536:
read_config:parser: Found a parser. Calling it: agentXSocket /
/var/agentx/master
trace: agentx_parse_agentx_socket(): mibgroup/agentx/agentx_config.c, 34:
agentx/config: port spec: /var/agentx/master
trace: netsnmp_ds_set_string(): default_store.c, 285:
*netsnmp_ds_set_string: Setting APP:1 = "/var/agentx/master"*
trace: read_config(): read_config.c, 843:
*Details:-*
Both snmpd , agentx example 'example-daemon' and folder /var/agentx has
same permission
root@SyncServer:/var/log# ls -la /var/agentx
total 8
drwxr-xr-x 2 root root 4096 Oct 2 11:46 .
drwxr-xr-x 13 root root 4096 Oct 2 11:46 ..
root@SyncServer:/var/log# ls -la /usr/sbin/snmpd
-rwxr-xr-x 1 root root 64488 Oct 2 09:59 /usr/sbin/snmpd
root@SyncServer:/var/log# ls -la /tmp/example-demon
-rwxr-xr-x 1 root root 37664 Oct 2 09:52 /tmp/example-demon
*net-snmp-5.9 config summary*
SNMP Versions Supported: 1 2c 3
Building for: linux
Net-SNMP Version: 5.9
Network transport support: Unix Alias UDP UDPIPv6 Callback UDPIPv4Base
UDPBase IPv4Base IPBase SocketBase IPv6Base
SNMPv3 Security Modules: usm
Agent MIB code: clock default_modules gnss host mibII
notification ntpSystem snmpv3mibs system target utilities => snmpv3mibs
mibII notification notification-log-mib target* agentx* disman/event
disman/schedule utilities host host/hrh_storage host/hrh_filesys
host/hrSWInstalledTable host/hrSWRunTable host/hr_system host/hr_device
host/hr_other host/hr_proc host/hr_network host/hr_print host/hr_disk
host/hr_partition mibII/system_mib mibII/sysORTable mibII/snmp_mib
mibII/vacm_vars mibII/setSerialNo mibII/at mibII/ifTable mibII/ip mibII/tcp
mibII/udp mibII/ipv6 mibII/icmp if-mib ip-mib ip-forward-mib tcp-mib
udp-mib notification/snmpNotifyTable
snmp-notification-mib/snmpNotifyFilterTable
notification/snmpNotifyFilterProfileTable ntpSystem/ntpSystem
snmpv3/snmpEngine snmpv3/snmpMPDStats snmpv3/usmStats snmpv3/usmConf
snmpv3/usmUser system/system target/snmpTargetAddrEntry
target/snmpTargetParamsEntry target/target target/target_counters
utilities/override utilities/execute utilities/iquery
MYSQL Trap Logging: unavailable
Embedded Perl support: disabled
SNMP Perl modules: disabled
SNMP Python modules: disabled
Crypto support from: crypto
Authentication support: MD5 SHA1 SHA224 SHA256 SHA384 SHA512
Encryption support: DES AES AES128 AES192 AES192C AES256 AES256C
Local DNSSEC validation: disabled
Thanks,
Pushpa.T
On Fri, Sep 27, 2024 at 12:14 AM Bill Fenner <fen...@gmail.com> wrote:
> Hi Pushpa,
>
> You are not enabling UNIX domain support, so net-snmp can't open the UNIX
> domain socket for agentx. You can either use the TCP socket by configuring
> with something like
>
> agentXSocket tcp:127.0.0.1:705
>
> and then configuring clients similarly, e.g., "snmptrap -X tcp:705"
>
> Or adding the UNIX domain transport, e.g., add "Unix" to your
> "--with-transports" configure argument.
>
> Bill
>
>
> On Thu, Sep 26, 2024 at 9:20 AM Pushpa Thimmaiah <
> pushpa.thimma...@gmail.com> wrote:
>
>> Hi All,
>>
>> I am getting following error while starting snmpd in net-snmp-5.9. I have
>> enabled agentx and compiled the source. Kindly guide me to resolve the
>> same.
>> I have created directory /var/agentx
>> ---------------
>>
>> agentx/master: initializing...
>> trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 655:
>> tdomain: tdomain_transport_spec("agentx", "/var/agentx/master", 1,
>> "[NIL]", "[NIL]", "[NIL]")
>> trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 736:
>> tdomain: Address starts with '/', so assume "unix" domain
>> trace: find_tdomain(): snmp_transport.c, 610:
>> tdomain: Found no domain from specifier "unix"
>> No support for any checked transport domain
>> Error: Couldn't open a master agentx socket to listen on
>> (/var/agentx/master):
>> ---------------------------------------------------
>>
>>
>> Thanks,
>> Pushpa.T
>> _______________________________________________
>> Net-snmp-coders mailing list
>> Net-snmp-coders@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
>>
>
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